div.header {
    background: #333333;
    text-align: center;
    font-size: 24px;
}

a {
    color: #FFFFFF;
    text-decoration: none;
}

table {
    margin: auto;
}

div.main {
    background: #3399CC;
    width: 70%;
    margin: auto;
}

div#register {
    width: 70%;
    margin: auto;
    padding-top: 15%;
    padding-bottom: 15%;
}

body {
    margin: 0px;
    padding: 0px;
    background: #CCCCCC;
    font-family: "微软雅黑", "黑体", "宋体";
}